272 NATURAL HISTORY OF PLANTS. 



Calyx sometimes subhypogynous, gamosepalous oblique ; teeth or 

 lobes nearly equal, or oftener posterior shorter. Petals sessile or 

 shortly unguiculate ; standard ovate or orbicular ; wings oblong, 

 slightly adhering to keel or androceum ; keel erect, obtuse or acumi- 

 nate, gibbous {Indigastrum 1 ) or furnished with a more or less projecting 

 spur on both sides. Stamens 10, 2-adelphous ; 9 connate into a thin 

 sheath cleft above and long persisting ; vexillary stamen free ; an- 

 thers uniform, glabrous or pilose, surmounted by gland-like promi- 

 nent connective. Germ en sessile or very shortly stipitate, 1,2 or 

 oftener oc-ovulate ; style glabrous ; stigma capitate, often penicillate. 

 Legume either terete, 4-gamous, or sub-compressed, septate between 

 seeds, 2-oo-seeded {Euindigofercr) ; or piano-compressed, straight, 

 arched, or circinate with thin margins, 2- a -seeded {Brissonia 3 ) are 

 more rarely 1 -seeded ; or short globose unarmed [Sjrfusridiophora*) ; 

 or short falcate subtriquetrous, with dilated echinate dorsal suture 

 {Accmthonotiii). Seeds globose, square, or cylindrical, truncate at 

 both ends, exarillate ; embryo exalbuminous ; radicle cylindrical or 

 clubbed. — Shrubs, undershrubs, or herbs, more or less covered with 

 hairs ; hairs sometimes simple, sometimes attached by middle (pili 

 medifixi), forked appressed ; leaves imparipinnate, or more rarely digi- 

 tate 3-foliolate or simple ; leaflets entire, stipellate or exstipellate ; 

 flowers 6 in axillary racemes or spikes, sessile or oftener pedicellate, 

 each solitary at axil of a bract; bracts caducous 7 [All hotter regions*). 



Fruct., ii., 317, t. 148. — Lamk., Diet., iii. 211; Spha>ridiophora, legume globose unarmed : h. 



Suppl., iii. 145; III., t. 626. — DC.,. Prodr., ii. germen 2-qo -ovulate; 3. Euindigqfera, legume 



221. — Endl., Gen., n. 6530. — B. H., Gen., terete 4-gonous or subcompressed ; 4. Atne- 



494, n. 91 (including : Acanthonotus Benth., carpus, legume compressed, straigbt arcbed or 



Amecarpus Benth., Brissonia Desvx., File- circinate ; sutures tapering. 



manthus Hochst., Semispadon Endl., Indi- 8 J acq., Hort. Schcenb., 230-236, 365 ; Icon. 



gastrum Jaub. & Spach, Oustropis Don (G.), Ear., t. 569-571.— H. B. K., Nov. Gen. et Spec, 



Sphcendiophora Desvx.). vi . 155, t . 580.— Vent., Ch. d* Plant., t. 30, 44; 



1 Jaub. & Spach, III. PL Orient, v. 101, Jard. Malm., t. 44, 55.— Wall., PI. Asial. 



t. 492, 493. Sar> t _ 279.— Endl., Atahta, i. t. 3 (Semi- 



Benth., Gen., loc. cit., sect. 3.— Oustropis spadon).—WiouT, Icon., t. 314, 315, 330-333, 



Don (G.), Gen. Si/s'., ii. 214 {Indigofera gra- 365-369, 385-387, 403, 404, 983. — Hook., 



edis Speeng. ;— Lotus Pot. Mag., t. 2808 ;— Icon., t. 188.— Jaub. & Spach, III, PI. Orient., 



Edemanthus Hochst., in Flora [1846], 593). t. 481-494.— Guill. & Pere., Fl. Senrg. Tent., 



Desvx., in Ann. Sc. Nat., ser. 1, ix. 409.— i. 172, t. 46-48.— Benth., in Mart. Fl. Bras., 



Amecarpus Benth., in Lindl. Veg. Kingd,, 554. Papil., 35. t. 5, 6 ; Fl. Austral., ii. 191,— Thw., 



Desvx., Joum, Bot., i. 125, t. 6.— Jaub. JEnum. PI. Zeyl., 83.— Haev. & Sond., Fl. Cap., 



& Spach, op. cit., t. 494. iL i 6 3.— Bakee, in Oliv. Fl. Prop. Afr., ii. 65.— 



Benth., Mger, 293. Bot Eeg ^ t- 300> 386; 789< 957> 991> l7u . 



Bink, purple, yellowish, or white. (i 8 42) t. 57 ; (1843) t. 14; (1846) t. 22.— Bot. 



This genus is divided by Bentham (loc. cit.) Mag., t. 198, 465, 476, 742, 3000, 3065, 3348, 



into 4 sections: a. germen 1-ovulate: 1. Acan- 5063.— Walp., Pep., i. 660; ii. 856; v. 514; 



thonotus, legume falcate, echinate dorsally; 2. Ann., i. 230; ii. 362; iv. 486. 



